The best and most correct answer among the choices provided by the question is the third choice "jellyfish and corals"
<span>Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic environments: they are predominantly marine species. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
        
             
        
        
        
Answer:
A frogs heart has 3 chambers. Two atria and a single ventricle. 
 
        
             
        
        
        
Answer:
anticodon sequence of three nucleotides on a tRNA molecule that bond to a complementary sequence on an mRNA molecule. 
 
        
             
        
        
        
Answer:
The correct answer is - d.  gradualism.
Explanation:
Gradualism is a model of evolution that explains that the smaller variation in an individual organism that is occurring over a period of the time is to the betterment of the organism in their environment.
These changes or variations allow them to thrive and survive with a slow successive change in an evolutionary line or the whole population. It is a consistent process.
Thus, the correct answer is - D. gradualism.
 
        
             
        
        
        
Punctuated equilibrium, it is rapid evolution with little change in between